70 lines
1.6 KiB
Ruby
Executable File
70 lines
1.6 KiB
Ruby
Executable File
# frozen_string_literal: true
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# Promotes survivors from eden to old gen and runs a compaction.
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#
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# aka "Nakayoshi GC"
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#
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# https://github.com/puma/puma/blob/de632261ac45d7dd85230c83f6af6dd720f1cbd9/lib/puma/util.rb#L26-L35
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def nakayoshi_gc
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4.times { GC.start(full_mark: false) }
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GC.compact
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end
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# GC::Profiler is used elsewhere in the code base, so we provide a way for it
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# to be used exclusively by this script, or otherwise results will be tainted.
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module GC::Profiler
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class << self
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attr_accessor :use_exclusive
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%i[enable disable clear].each do |method|
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alias_method "#{method}_orig", "#{method}"
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define_method(method) do
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if use_exclusive
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warn "GC::Profiler: ignoring call to #{method}"
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return
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end
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send("#{method}_orig") # rubocop: disable GitlabSecurity/PublicSend
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end
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end
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end
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end
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GC::Profiler.enable
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GC::Profiler.use_exclusive = true
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require 'benchmark'
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RAILS_ROOT = ENV['RAILS_ROOT']
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tms = Benchmark.measure do
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require RAILS_ROOT + 'config/boot'
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require RAILS_ROOT + 'config/environment'
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end
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GC::Profiler.use_exclusive = false
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nakayoshi_gc
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gc_stats = GC.stat
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warn gc_stats.inspect
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gc_total_time = GC::Profiler.total_time
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GC::Profiler.report($stderr)
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GC::Profiler.disable
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gc_stat_keys = ENV['GC_STAT_KEYS'].to_s.split(',').map(&:to_sym)
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values = []
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values << ENV['SETTING_CSV']
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values += gc_stat_keys.map { |k| gc_stats[k] }
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values << ::Gitlab::Metrics::System.memory_usage_rss
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values << gc_total_time
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values << tms.utime + tms.cutime
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values << tms.stime + tms.cstime
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values << tms.real
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puts values.join(',')
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